With President Trump’s recent imposition of USD 34 billion in new tariffs on imports from China and China’s prompt retaliation, the US is now in its biggest trade war with China and other countries since the 1930s. President Trump’s policies focusing on threats, trade deficits and bilateral trade, as well as the movement away from the postwar international system, have been historical aberrations since 1945. The US trade diplomacy ought to concentrate on building coalitions and viable proposals for addressing trade issues, including those concerning the World Trade Organization rule-making and dispute resolution. This would help to ensure a rules-based trading system.